What couldve caused me to do this?

One morning i remember waking from a dream (dont remember what the dream was about) and i opened my eyes,my body was lied down stiff on my back and then out of nowhere i slowly sat up straight looked to my left at a closed door(i was also the only one awake) and i just said"Yes" in a tone like if i finally understood something that someone told me. Then i felt like i snapped out of it and started to feel nervous and i felt a cold chill down the side of my neck. The entire time i was "awake" i was spectating through my eyes like if something was controling me. A month later i saw a Shadow person peaking out of a door, looking at me and when i looked, i caught a glimpse of it, i walked over to its spot and made a guess of its height and it was 5'10"(irrelevent sorry). Could these to experiences be connected? If so how and in what ways? Any questions to know what the shadow person looked like feel free to email me. Thank You for any answers and i apologize for the long question :)